The late Rev. Alexander M'Leod, D. D., who had the works of learned predecessors before him, has successfully corrected many of their misinterpretations in his valuable publication, entitled "Lectures upon the Principal Prophecies of the Revelation." At the time when he wrote that work, he possessed several advantages in aid of his own expositions. He had access to the most valuable works which had been issued before that date, (1814.). He was then in the vigor of youthful manhood; and he was also comparatively free from the trammels which in attempts to expound the Apocalypse, have cramped the energies of many a well-disciplined mind, _political partialities_. At the time of these profound studies, he occupied a position "in the wilderness," from which as a stand point, like John in Patmos, he could most advantageously survey the passing scenes of providence with the ardor of youthful emotion, and with unsullied affection for the divine Master. With all these advantages, however, the dispassionate and impartial reviewer may discover, in the rapid current of his thoughts, that the active powers of the expositor some times took precedence of the intellectual. Two special causes may be assigned for this, hereditary love of liberty, and the actual condition of society at the time. Born in Scotland, the cradle of civil and religious liberty from the days of John Knox, Dr. M'Leod's traditions and mental associations were necessarily imbued with the atmosphere of such surroundings. To such causes may be attributed occasional declamation, extravagant verbosity and unconscious inconsistencies, not well comporting with the solidity and self possession so desirable on the part of an expositor. Yet even in such outbursts of impassioned eloquence we may sometimes discover noble conceptions commanding our admiration, if not altogether such as to secure our approbation. It ought to be considered, moreover, that the "Lectures" came from their author in a turbulent, if not in a revolutionary condition of society. Peninsular Europe was convulsed by the successful military career of that brilliant general, Napoleon. England and the United States were also at war. The independence and even the existence of the young Republic were apparently in peril. The lecturer very naturally sympathized with the land of his adoption, in which resided his domestic treasures and many of the "excellent ones of the earth," to whom he was bound by conjugal, paternal and covenant ties. In a condition of actual warfare, he could not but feel most keenly the constriction of these manifold and endearing bonds, especially when thought to be jeopardized.